INFLUENCE OF IONIC SALT COMPOSITION OF SOIL SOLUTION ON MICROAGGREGATE DISINTEGRATION IN CALCAREOUS CHERNOZEM

Citation
Nb. Khitrov et al., INFLUENCE OF IONIC SALT COMPOSITION OF SOIL SOLUTION ON MICROAGGREGATE DISINTEGRATION IN CALCAREOUS CHERNOZEM, Eurasian soil science, 27(11), 1995, pp. 29-48
Citations number
15
Categorie Soggetti
Agriculture Soil Science
Journal title
ISSN journal
10642293
Volume
27
Issue
11
Year of publication
1995
Pages
29 - 48
Database
ISI
SICI code
1064-2293(1995)27:11<29:IOISCO>2.0.ZU;2-G
Abstract
Laboratory experiments with Calcareous Chernozems showed that changes in salt composition cause disintegration of microaggregates (> 0.01 mm ) while inducing no reliable increase of the content of nonaggregated particles (< 0.001 mm). SAR and the specific electrical conductivity o f the soil solution have the most important influences on microstructu re disintegration. Magnesium caused marked disaggregation only when it was the dominant bivalent cations (> 60-70 percent). Change in ionic salt composition on the background of mechanical mixing of moist soil promotes more profound disintegration of the initial soil microstructu re.